""" api package

This package provides the API implementation for the AppEngine
InFlightXt application.

   Copyright 2011 Bravo369.org

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

author = Mike Meade (mmeade@google.com)
"""
import logging
from api import positions
from api import sessions


class Error(Exception):
  pass


class NoHandlerFoundError(Error):
  pass


class Handlers(object):
  __method_handlers = {
      'session': sessions.Sessions,
      'positions': positions.Positions
      }

  @classmethod
  def getHandler(cls, handlerClass, handlerMethod):
    logging.info('Requesting %s.%s', handlerClass, handlerMethod)
    handlerClass = cls.__method_handlers.get(handlerClass, object())
    handlerMethod = getattr(handlerClass, handlerMethod, None)
    if not handlerMethod:
      raise NoHandlerFound('No handler found for requested method: %s' % handlerClass)
    return handlerMethod
